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$1,013+ Cheap flights from Dulles Intl (IAD) to Adelaide (ADL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ADL
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap flight deals from Dulles Intl to Adelaide

Cheapest flights from Dulles Intl to Adelaide
Explore the most affordable flight options available from Dulles Intl to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/234:10 pm
IAD
-
ADL
1 stop25h 50m
United Airlines
Mon 3/22:55 pm
ADL
-
IAD
1 stop30h 02m
United Airlines
Deal found 1/26$1,217
This Ovago deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/236:05 pm
IAD
-
ADL
1 stop23h 55m
Multiple Airlines
Mon 3/22:55 pm
ADL
-
IAD
1 stop30h 02m
Multiple Airlines
Deal found 1/24$1,287
This FlightHub deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:37 pm
IAD
-
ADL
2 stops26h 48m
Qantas Airways
Thu 3/199:00 am
ADL
-
IAD
2 stops28h 23m
Qantas Airways
Deal found 1/25$1,294
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/74:10 pm
IAD
-
ADL
1 stop25h 50m
United Airlines
Sat 3/142:15 pm
ADL
-
IAD
1 stop25h 18m
United Airlines
Deal found 1/25$1,317
This United Airlines deal was found by Cheapflights users on 1/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/1810:30 pm
IAD
-
ADL
2 stops43h 30m
United Airlines
Sat 2/282:55 pm
ADL
-
IAD
1 stop22h 00m
United Airlines
Deal found 1/25$1,321
This Booking.com deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/235:13 pm
IAD
-
ADL
3 stops57h 27m
Air Canada
Mon 3/27:55 pm
ADL
-
IAD
3 stops40h 01m
Air Canada
Deal found 1/26$1,378
This Air Canada deal was found by Cheapflights users on 1/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/1012:33 pm
IAD
-
ADL
3 stops33h 37m
Multiple Airlines
Thu 3/197:55 pm
ADL
-
IAD
3 stops39h 01m
Multiple Airlines
Deal found 1/24$1,397
This oojo deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:52 pm
IAD
-
ADL
2 stops28h 38m
Qantas Airways
Wed 3/1810:10 am
ADL
-
IAD
2 stops27h 13m
Qantas Airways
Deal found 1/26$1,411
This United Airlines deal was found by Cheapflights users on 1/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/116:00 pm
IAD
-
ADL
2 stops26h 30m
United Airlines
Wed 3/181:55 pm
ADL
-
IAD
1 stop21h 24m
United Airlines
Deal found 1/26$1,477

Find flight deals from Dulles Intl to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,217
(United Airlines)

One-way from

$1,013
(FlightHub)

Popular in

November

Cheapest in

March

Average price

$1,529
Provider with most accurate pricing for Washington, D.C. (WAS)-Adelaide flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. (WAS)-Adelaide flights.
Search Deals
From Washington, D.C. Dulles Intl to Adelaide
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Adelaide
Search Deals
Highest demand for flights based on searches. 14% potential increase in price ($312 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($66 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Adelaide that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 26, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Adelaide that are best for you.

Fly from

Dulles Intl

Fly to

Adelaide

Route

Depart

Return

Price

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 2/23

4:10 pm-9:30 am

1 stop25h 50m

Adelaide

Mon 3/2

2:55 pm-5:27 am

1 stop30h 02m

$1,217

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 2/23

6:05 pm-9:30 am

1 stop23h 55m

Adelaide

Mon 3/2

2:55 pm-5:27 am

1 stop30h 02m

$1,287

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 3/10

5:37 pm-10:55 am

2 stops26h 48m

Adelaide

Thu 3/19

9:00 am-10:53 pm

2 stops28h 23m

$1,294

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 3/7

4:10 pm-9:30 am

1 stop25h 50m

Adelaide

Sat 3/14

2:15 pm-1:03 am

1 stop25h 18m

$1,317

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 2/18

10:25 pm-9:30 am

2 stops43h 35m

Adelaide

Sat 2/28

2:55 pm-9:25 pm

1 stop22h 00m

$1,321

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Mon 2/23

5:13 pm-6:10 pm

3 stops57h 27m

Adelaide

Mon 3/2

7:55 pm-8:26 pm

3 stops40h 01m

$1,378

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 3/10

12:33 pm-12:40 pm

3 stops33h 37m

Adelaide

Thu 3/19

7:55 pm-8:26 pm

3 stops39h 01m

$1,397

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 5/28

7:21 pm-11:05 am

2 stops26h 14m

$1,013

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 5/28

6:10 am-4:25 pm

3 stops44h 45m

$1,204

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 5/28

4:10 pm-1:55 pm

3 stops32h 15m

$1,293

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 11 results
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Best time to book a flight from Dulles Intl to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Adelaide from Washington, D.C. Dulles Intl?

    Located just 4.1 mi from the city center, Adelaide is the airport most travelers will use when flying to Adelaide from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Adelaide (ADL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 0 different airlines.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Adelaide?

    Departing from Washington, D.C. Dulles Intl Airport to Adelaide will take you 25h 50m. The distance between Washington, D.C. Dulles Intl Airport and Adelaide is about 10437 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Dulles Intl to Adelaide that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Adelaide flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Adelaide.

  • Can I find deals for business class flights from Dulles Intl to Adelaide?

    Yes. Cheapflights offers flight deals from Dulles Intl to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

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